Table 24. System Profile Settings details
Option Description
System Profile Sets the system profile. Setting the System Profile option to a mode other than
Performance Per Watt (DAPC), has the BIOS automatically set the rest of the options.
You can only change the rest of the options if the mode is set to Custom. This option
is set to Custom by default. Other options include Performance Per Watt (DAPC),
Performance, Performance Per Watt (OS), and Workstation Performance.
NOTE: All the parameters on the system profile setting screen are available only when
the System Profile option is set to Custom.
CPU Power Management Sets the CPU power management. This option is set to Max Performance by default.
Other option includes System DBPM (DAPC), OS DBPM.
Memory Frequency Sets the speed of the system memory. You can select Maximum Performance,
Maximum Reliability, or a specific speed. This option is set to Maximum Performance
by default.
Turbo Boost Enables or disables the processor to operate in the turbo boost mode. This option is set to
Enabled by default.
C1E Enables or disables the processor to switch to a minimum performance state when it is
idle. This option is set to Disabled by default.
C States Enables or disables the processor to operate in all available power states. C States allow
the processor to enter lower power states when idle. When set to Enabled (operating
system controlled), or Autonomous (if hardware controlled is supported), the processor
operates in all available Power States to save power. The Enabled and Autonomous
settings may increase memory latency and frequency jitter. This option is set to Disabled
by default.
Memory Patrol Scrub Sets the memory patrol scrub mode. This option is set to Standard by default.
Memory Refresh Rate Sets the memory refresh rate to either 1x or 2x. This option is set to 1x by default.
Uncore Frequency Enables you to select the Uncore Frequency option. Maximum mode (default) enables
the processor to optimize power resources across cores and uncores during runtime. The
Energy Efficiency Policy option influences the optimization of the uncore frequency to
either save power, or to optimize the performance.
Energy Efficient Policy Enables you to select the Energy Efficient Policy option. The CPU uses the setting to
manipulate the internal behavior of the processor and determines whether to target higher
performance or better power savings. This option is set to Performance by default.
Monitor/Mwait Enables the Monitor/Mwait instructions in the processor. This option is set to Enabled for
all system profiles, except Custom by default.
NOTE: This option can be disabled when System Profile is set to Custom.
NOTE: When the C States option is set to Enabled in the Custom mode, changing
the Monitor/Mwait setting does not impact the system power or performance.
Workload Profile This option allows the user to specify the targeted workload of a server and allows
performance optimization that is based on the workload type. This option is set to Not
Configured by default.
CPU Interconnect Bus Link
Power Management
Enables or disables the CPU Interconnect Bus Link Power Management. This option is set
to Disabled by default.
PCI ASPM L1 Link Power
Management
Enables or disables the PCI ASPM L1 Link Power Management. This option is set to
Disabled by default.
36 Pre-operating system management applications
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